Question

state the two laws of refraction.

Answer 1

the incident ray, reflected ray and the normal always lie on the same plane.

the ratio of sin angle of incidence and sin angle of reflection is always constant which is also known as a Snell's law.

I hope this will help you

Answer 2

1st law : The incident ray, the refracted ray and the normal at the point of incidence all lie in the same plane
2nd law:The ratio of the sine of angle of incidence i to the sine of angle of refraction r is constant for th pair of given media